Cycle-lock.



G. BAUMANN.

CYCLE .LOCK.

APPLICATION FILED SEPT. 18, 1912.

1,137,691 Patented Apr. 27, 1915.

2 SHEETS-SHEET l- THE NORRIS PETERS CO.. FHOTC-LITHO.. WASHINGWN. D. C.

GOTTFRIEDBAUMANN, or HEATON MERSEY, ENGLAND.

CYCLE-LOCK.

Specification of Letters Patent.

Patented Apr. 27 1915.

Application filed. September 18, 1912. Serial No. 721,064.

To all whom it may concern:

Be it known that I, GOTTFBIED BAUMANN, subject of the King of Great Britain, residing at Rutli Villa, Mersey Road, Heaton Mersey, in the county of Lancaster, England, have invented certain new and useful Improvements in Cycle-Locks, of which the following is a specification. a

The present invention relates to new and useful improvements in cycle locks and more particularly to that type of lock disclosed in my British Patent N 0. 14,091, granted to me the 2nd of May 1912, and the object of my invention in general is to so improve the construction of the lock therein set forth that it may be more cheaply and durably constructed.

A further object of my inventionis to provide means for holding the numbered or lettered locking rings against casual rotation. And a still further object of my invention is to so construct the body or casing of the lock as to absolutely prevent the taking apart of the lock when in use'and the consequent unlocking of the cycle.

With these and other objects in view, my invention will be more fully described, illustrated in the accompanying drawings, and then specifically pointed out in the claim which is attached to and forms a part of this application.

In the drawings: Figure 1 is an elevation, partially in section, showing my improved lock in use; Fig. 2 is a central longitudinal sectional view of the lock, showing the position of the parts when unlocked, the rings being turned to such a position that the locking pin may be extended; Fig. 3 is a transverse sectional view on the line 33 of Fig. 2; Fig. 4 is a detail perspective V16W of the spring washer employed in holding the locking rings against casual rotation; Fig. 5 is an elevation, partially in section, showing the application of a modified form of lock;

Fig. 6 is a longitudinal sectional view, similar to that of Fig. 2, but showing a'modified form of construction; Fig. 7 is a detail, fragmentary longitudinal section, show ng an adjustable type of locking ring which may be employed with my lock; Fig. 8 is an unassembled perspective View of the type of locking ring shown in Fig. 7 Fig. 9 1s a fragmentary longitudinal sectional view of a still further modified form of lock.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

My lmproved lock is of that type in which the body member of the lock is passed between the spokes of one of the cycle wheels,

ing 10 provided intermediate its length with a longitudinally extending slot 11 and with one end externally threaded as shown at 12. Mounted upon the unthreaded end of this bushing, is a sleeve 13 which is held in place by a bolt 14:, the tapered end 15 of which is driven into the end of the bushing expanding the same against the inner face of the sleeve to lock the sleeve and bushing against independent movement. The inner end of this sleeve is also provided with a longitudinally extending slot 16 which registers with one end of the slot 11 and slidably mounted in the bushing, is a locking bolt 17 which, in its innermost position, extends but slightly beyond the threaded end of the bushing. A pin 18 is passed through the inner end portion of the bolt 17, this pin providing for manually extending and retracting the locking bolt 17 beyond the bushing. This locking bolt is further provided with a plurality of spaced locking pins 19 which are in alinement with each other and with the pin 18 but which are so proportioned as to extend but a slight distance through the slot 11.

Mounted for rotation about the bushing 10 and bearing against each other and registering slots 16 and 11 and threaded or otherwise secured by its inner end into the against the inner end of the sleeve 13, area plurality of locking rings 20, each of which radial slots out of alinement with the slot 11 of the bushing.

Surrounding the bushing and against the outermost of these rings 20, is, a spring washer 23 Which, as best shown in vide a tongue 24 which is bent outwardly at right angles tOrtlL6. 'bO'Cly member and a ra'dial'slot 25'which"registers with the slot 11 of the'bushing. Asecondsleeve' 26 is internally threaded to engage with the threads 12' of the bushing and is screwed upon the bushing as shown in Fig. 2 to bear' closely. by its inner end against the outer'face of thewasher 23. The'inner end of this second sleeve is *provided with a radially extending recess 27 in which the tongue24 seats when'the sleeve is in place. Each of the locking rings'20 is preferably provided at its inner end with radially extending milled flange 28 by means of which it may be readily turned and each ring is marked about its periphery' with' a v series of letters ornumbers as shown at 29 in Fig. 1 of the drawings, one of these lettersin each instance being directly over the outer end of the slot 21.

'In order to providefor a clear understanding of the application and operation of my improved look, I have illustrated the same in use, 30 indicating one of the forks of the cycle frame and 31 one of the wheels having the usual spokes 32. The inner faces of the prongs of the fork are provided with open 'ings'33'through which the locking bolts14 and 17 may be passed, the prongs about these openings being preferably strength ened by brazing plates of sheet metal 34 upon the prongs and about the openings.

' In applying the lock, the locking-rings 20 are turned insuch'a manner as to bring their radial slots 21 in alinenient with-the slot '11 of the bushing, this being readily I accomplished by the owner who knows the letterdirectly over the slot of each of the lockingrings by revolvingv the rings until these letters are brought 1n alinement with the extended endof the pin 18. The lock 1 is then positioned between adjacent spokes "32 of the wheel with the locking bolt 14 inserted through the opening 33-of oneof 5 theprongs and swung into alinement with the opening in the opposite prong. The looking bolt 17 is then moved to extended position to pass-its free end through the opening of the other prong and so look the'wheel tion and cannot be retracted, until the lock- Ting rings are returned to the position shown in Fig. 2.. As there are a plurality of these rings and as th'e lettersare' differently ar- Fig. 4 of the drawings, is slitted to pro- I readily seen that it would be almost impossible. -for a person not acquainted with ranged upon each of the rings, it will be the lock to unlock the same. The seating of the outermost of the pins 19 in the recess 27 of the sleeve prevents the partial unthreading of the sleeve'from the bushing when the lockis in use,* even though the ends of the-sleeves 13 and 26' do not bear snugly against-the innerfaces of the fork prongs; This is of great importance' as otherwise the sleeve 26 might be partially unthreaded, allowing "slight longitudinal movement of the locking rings,

thereby greatly assisting in releasing of the lock.

The spring washer 23 being compressed between the/sleeve 26 and the outermost of the unlawful the locking rings serves to maintain the locking rings in frictional engagement'with each other and with the sleeve 13 and therefore to prevent their casual turning out of position during the application of the look.

In Figs-5 and 6, I have illustrated a slightly modified form of lock in which the operating parts are essentially the samefand have shown its application to the frame of a cycle. In this case, the sleeve '13 and also the bolt 14 are replaced by a solid cylindrical head 35"formed upon one end of the bushing 10, and provided with a socket 36 formed in its free end.

The locking bolt 17 is replaced a locking bolt 38, the outer 'endof which is en-- larged to provide a head 39 having a socket 40 When this type of lock is employed,

the prongs of the fork 30, instead of being provided with openings, are provided with oppositely formed inwardly directed studs bolt having a tapered end 43 which is in-' serted intheend of the bushing and having atits free end a head 44 provided with a socket 45. I V V In order to insure further protection against unauthorized releasing of'the look, I

prefer to employ locking rings of'the type.

disclosed in Figs. 7 and 8 of the drawings.

The rings shown in the other figures are of a different and simpler form in order to avoid unduly complicating the drawings, but it willbe understood that rings of thetype shown in Figs. 7 and 8 may be employed in'their place without in any Way departing from the spirit of my invention. These latter rings each include an outer tubular casing 46 provided at one end with a milled flange 47, similar to that of the rings 30 and having a tapped bore 48 adapted to receive a binding pin 49. They further include an inner ring 50 provided with a radially disposed slot 51 which, in assembled position of the ring, takes the place of the radial slot 21 of the locking rings 20, as shown in Fig. 7. This inner ring is provided about its peripheral face with a plurality of longitudinally extending grooves or recesses 52 adapted to receive the inner extended end of the set pin 49 to lock the inner ring against rotation with respect to the outer ring. The inner ring is considerably shorter than the outer ring and is secured within the outer ring with one end flush with the flanged end of the outer ring to provide, when the rings are assembled, an annular recess 53 corresponding to the recesses 22 of the rings 20. The outer ring is marked about its periphery with a series of letters or numbers in the same manner as are the rings 20 and it will be apparent that by removing the set pin 49, the inner ring may be turned to bring its slot 51 in alinement with any desired letter or number carried by the outer ring, the rings being then again secured together by replacement of the set pin which is of such length as to not only seat in the grooves 52, but to bear against the inner faces thereof and so prevent independent longitudinal movement of the rings. When rings of this type age employed, it will be apparent that by retracting the locking bolt 17 or the locking bolt 38, as the case may be, to seat the pins 19 in the annular recesses of the rings, the sleeve 26 may be unthreaded from the bushing and the lock taken apart, permitting the removal of the locking rings. These locking rings may be then adjusted and replaced and the sleeve again applied to the bushing. By this means, the owner of the lock can at any time change the combination of letters or numbers necessary to unlock the same, thus avoiding the necessity of getting a new look in case the combination of the old look is discovered.

From the foregoing description, it will be apparent that I have made a number of improvements over my old look among which is the provision of the spring washer 23 for holding the locking rings against casual rotation. Another improvement consists in the provision of the radial recess 27 in the sleeve 26 arranged to receive one of the pins carried by the locking bolt and so prevent the unthreading of the sleeve 26 when the lock is in use.

Having thus described the invention, what is claimed as new is:

A lock including a tubular bushing rovided with a longitudinal slot, a fixed olt mounted in one end of the bushing, a second bolt slidably mounted in the bushing and adapted in active position to be extended beyond the other end of the same, a plurality of spaced pins carried by said second bolt and extending through the slot of the bushing, a plurality of locking rings rotatably mounted upon the bushing and provided with radial slots for the passage of the pins of the locking bolt and in one face with an annular recess, a sleeve threaded upon that end of the bushing through which the movable bolt extends and having its inner end recessed to register with the slot of the bushing, and a spring washer mounted .between the inner end of the sleeve and the outer locking ring, said washer having a radially formed outwardly bent tongue seating in the recess of the sleeve and providing a slot registering with the slot of the bushing.

In testimony whereof I aflix my signature in presence of two witnesses.

GOTTFRIED BAUMANN.

Witnesses GRANT FARRINGTON, EDWARD HoRsrALL.

G'opies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

